The British squadron lead by Downie was building up on the other side of the lake preparing for battle. Macdonough had anchored his fleet near Cumberland Head in Plattsburgh Bay to await Downie's attack. At 8:00 a.m. on September 11th Downie rounded Cumberland Head and engaged Macdonough's fleet.
Each side lost a ship early in the battle. Downie was killed instantly when a carriage from a cannon fell and hit him. Downie was defeated and Macdonough was given many rewards from Congress.
After 3 years of campaigning the American - Canadian border disputes were still at a stalemate.